episternum /epi·ster·num/ (-ster´num) a bone present in reptiles and monotremes that may be represented as part of the manubrium, or first piece of the sternum.
ep·i·ster·num ( p  -stûr n m)n. The broad upper segment of the sternum occasionally fused with the body of the sternum and forming the sternal angle. Also called manubrium, presternum. |
episternum
the manubrium, or cranial segment of the sternum.
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